Pressure control method for controlling a flow rate of the pump

The present invention discloses a method for controlling a flow of pressure control of the pump, belonging to the field of mechanical control, pressure control proportional valve and the pump 1 turn 2, controller 3, the guide 4 is connected to the handle. The pilot is provided with pilot pressure sensors handle 4, the pump control pressure sensor is provided with a flow rate feedback. Feedback pilot pressure sensors and flow sensors are connected to the controller. Flow control method comprises a feedback controller 3 through the sensor signal acquisition pilot pressure developed pilot pressure sensors and flow - flow demand curve, and flow monitoring PID. Pressure aspect of the present invention by using the flow rate compensation servo control, pressure output command, controls the pump pressure can achieve the control pressure, while maintaining the good operation of the micro flow demand.